Electric bicycle frame



FIG. 1 is a rear and right side perspective view of an electric bicycle frame embodying my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a right side elevation thereof as part of an exemplary bicycle.

The broken lines in the drawings illustrate portions of the electric bicycle frame that form no part of the claimed design. 

CLAIM The ornamental design for an electric bicycle frame, as shown and described. 